The United Nations charter is an instrument that

The United Nations charter is a document that outlines the basic principles and goals of the United Nations, and establishes the rights and responsibilities of its member states. It sets out the purposes of the United Nations, including promoting international cooperation, maintaining international peace and security, and protecting human rights. It also outlines the structure and powers of the various UN organs, such as the General Assembly and the Security Council. In summary, the UN charter is an instrument that lays the foundation for the work and operations of the United Nations.